. Author manuscript; available in PMC: 2017 Oct 1.

Published in final edited form as: J Exp Child Psychol. 2016 Jun 24;150:207–226. doi: 10.1016/j.jecp.2016.06.003

Table 2.

Summary of hierarchical linear regression analyses for variables predicting informal math ability

Variable	Model 1			Model 2			Model 3

	B	SE B	β	B	SE B	β	B	SE B	β
Age	<.001	<.001	.25	<.001	<.001	.14	<.001	<.001	.03
Expressive vocabulary (DVAP)	−.001	.001	−.14	−.001	.001	−.14	<.001	.001	−.07
ANS acuity (w)				−.30	.19	−.26	−.21	.20	−.18
Estimation variability (Sigma)							−.36	.24	−.26
R²		.06			.11			.16
F for R² change		1.24			2.46			2.22

^***

p < .001,

^**

p < .01,

p < .05